Water-tube boiler.



No. 788,549. PATENTBD MAY 2, 1905.

J. M. MOGLELLON. WATER TUBE BOILER.

APPLICATION FILED AUG.12,1904.

2 SHEETS-SHEBT 2.

17 Iuml 16401.0 l

UNITED STATES Patented May 2, 1905.

JAMES M. MOGLELLON, OF EVERETT, MASSACHUSETTS.

WATER-TUBE BOILER.

SPECIFICATION forming part of Letters Patent No. 788,549, dated May 2, 1905.

7 Application filed August 12, 1904. Serial No. 220,487.

To ztZZ 11/72/0722 it Huey cmeeern:

Be it known that I, JAMEs M. MoOLELLoN, a citizen of the United States, residing at Everett, county of Suffolk, and State of Massachusetts, have invented an Improvement in Water-Tube Boilers, of which the following description, in connection with the accompanying drawings, is a specification, like numerals on the drawings representing like parts.

The object of my present invention is to provide a novel water-tube boiler which can be easily constructed and which is very efficient in operation.

The boiler herein illustrated is similar to that illustrated in my copending application, Serial No. 185,781, filed December 19, 1903, in that its sides are formed of horizontal tubular headers or manifold water-tubes, to which are connected inclined tubes within the boiler. The present boiler, however, differs from that of my prior application in that the water-tubes within the boiler connect the horizontal manifolds on one side of the boiler to those on the other, while in my prior ap lication these inclined tubes c011- nect the iorizontal manifolds on one side of the boiler to the inclined headers at the top of the boiler. In my present invention the horizontal manifolds forming each side of the boiler are divided into three groups, and the water-tubes within the boiler are so arranged that one group of tubes connects the lower group of manifolds on one side of the boiler to the middle group on the other side, another group of water-tubes connects the latter group of manifolds to the upper group of manifolds on the first side, and still another group of tubes connects the latter group of manifolds to the steam-drum. The construction of the boiler is such that its main features may be used either in an upright boiler or in a horizontal boiler.

In the drawings, Figure 1 is a part elevation and part vertical section of my improved boiler when used as an upright boiler. Fig. 2 is a section on the line a; :r, F ig. 1. Figs. 3 and 4 are details hereinafter referred to.

At two opposed sides of the boiler are horizontal manifolds 3" 3 3, the manifolds at each side of the boiler preferably being arstand at the corners of the boiler, said headers at their upper ends communicating with horizontal headers 5, extending across the ends of the boiler, and at their lower ends with other horizontal headers, 6, also extendingacross the end of the boiler. Within the boiler are a plurality of crossed inclined water-tubes, which connect the manifolds at one side the boiler to those at the other and also connect certain of said manifolds to the steam-drum 7, which preferably extends the full length of the boiler at its upper end and has its flattened ends riveted and nippled to the cross-headers 5, as best seen in Fig. 2. Part of the inclined water-tubes (those desi nated 8) connect the lower group of manifolds 3 on each side of the boiler to the middle group of manifolds on the opposite side of the boiler. Said latter group I have for convenience designated by 3 This latter "roup of manifolds 3" on each side of the boiler is connected to the upper group of manifolds 3" on the opposite side of the boiler by other inclined tubes, 8". The latter group of manifolds 3" on each side of the boiler is connected directly to the drum 7 by watertubes, (designated by 81) I find it most convenient to arrange the tubes within the boiler at substantially an angle of sixty degrees to the vertical, because with this arrangement it is possible to use at the sides of the boiler horizontal manifolds with a hexagonal exterior shape and yet have the various watertubes 'enter the manifolds at right angles to their sides.

In the present form of my invention the manifolds comprising the upper group 3 are made round'exteriorly, because the angles of the various tubes 8" vary somewhat, and it would not be feasible to use the hexagonal manifolds and yet obtain a tight joint. I

The various tubes within the boiler are preferably arranged in rows one above the other, as shown, and each manifold will have opposite the end of each tube which enters it a removable plug 9, so that access may be had to any tube for the purpose of cutting it out and removing it or replacing it and expanding it into the manifold. This construction makes every tube individually removable. I have also placed removable plugs 10 in each of the vertical headers 4 opposite the ends of each of the manifolds in order to facilitate the removal or replacing of any one of the manifolds.

In order to make a tight joint between each of the water-tubes 8 and the drum, I preferably bend the upper end of each of said tubes so that it will enter the drum at right angles. This arrangement is only preferable, however, and any other way of connecting the tubes 8 to the drum may be adopted without departing from the invention.

At the ends of the boiler are vertical manifolds 11, which are preferably flat-sided and which are nippled or otherwise secured to the cross-headers 5 and 6 at their upper and lower ends, respectively. I prefer to con nect the manifolds 1 1 on one end of the boiler to those on the other with horizontal watertubes 12, thereby to further increase the heating-surface. Said tubes 12 also act as baffles for the hot gases and prevent them from escaping too freely.

13 designates a hood or bonnet covering the top of the boiler and provided with a smoke-stack 14.

The grate will preferably be placed about on the level of the lower cross-headers 6, and for forming the firing-door I preferably make certain of the vertical manifolds 11 shorter than the others and connect them to a short crossheader 15, which forms the top of the door.

In a boiler of this kind it is essential that the water-tubes within the combustionchamber be cleaned frequently in order to dislodge the soot and dust therefrom. To facilitate this operation, I have separated the various vertical manifolds 11 at the ends of the boiler and provide apertured plates between the manifolds, through the apertures of which the nozzle of a blower or steamjet may be inserted. In the preferred form of my invention I make each of the manifolds 11 with grooves 16 in its sides and place in said grooves two plates 17, movable relative to each other, each plate having apertures 19. Normally the plates of each pair are arranged so that the apertures therein stand out of alinement with each other, as shown at the left in Fig. 3 but by moving the outer plate upwardly the apertures can be brought into alinement, as shown at .the right, Fig. 3, thereby to furnish openings through which the nozzle of a blower or other suitable device may be inserted. With this construc- I tion the cleaning of the boiler, a process which has to be performed every little while, is greatly facilitated.

in a boiler constructed as shown in the drawings the cool water from the drum will pass through the nipples 18 into the crossheaders 5 and thence down the end headers or feeders 4, from which it is distributed or fed into the various horizontal manifolds 3 3 3 As the water is heated in the watertubes it passes through the various tubes and is finally delivered to the drum, the water in making its passage to the drum moving upwardly in tubes 8 into the manifolds 3 ,from the latter through tubes 8 into the manifolds 3, and from said manifolds into the drum. The water is therefore subjected to the action of the heated products of combustion three times during its passage to the drum.

A glance at the drawings shows the large amount of heatingsurface which my boiler contains.

The boiler is made entirely of water-tubes, as will be seen, and each tube is individually removable, with the result that repairs can very quickly be made should any one or more tubes burn out.

One advantage of this form of boiler is that without extensive alterations it may be used either for an upright or a horizontal boiler, the changing of it from one to the other involving very little more than turning it down on itsside and arranging the tubes 11 to stand at right angles to the position shown in the drawings.

WhileI have illustrated herein one embodiment of my invention, I do not wish to be limited to the exact construction shown, as various changes may be made without departing from the invention.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A water-tube boiler having horizontal closely-arranged manifolds at its sides, vertical water-tubes at its ends, and straight crossed inclined water-tubes extending from the manifolds on one side of the boiler to those on the other side.

2. A water-tube boiler having horizontal closely-arranged hexagonally-shaped manifolds on its sides, said manifolds being arranged with their inner faces at angles of thirty degrees with the perpendicular, and crossed inclined water-tubes connecting the manifolds on one side to those on the other side, said water-tubes extending perpendicular to said faces.

3. A water-tube boiler having horizontal closely-arranged hexagonally-shaped manifolds on its sides, the inner faces of said manifolds occupying planes having an angle of substantially thirty degrees with a perpendicular plane, and inclined water-tubes connecting the manifolds on one side of the boiler to those on the other side, said water-tubes extending at right angles to the faces of the manifolds, and said manifolds having plugged apertures opposite the ends of the watertubes.

4. A water-tube boiler having horizontal closely-arranged hexagonally-shaped manifolds on its sides, the inner faces of said manifolds occupying planes having anangle of substantially thirty degrees with a perpendicular plane, and inclined water-tubes connecting the manifolds 011 one side of the boiler to those 011 the other side, said water-tubes extending at right angles to the faces of the manifolds, a portion 'of said manifolds hav ing Water-tubes extending from each of said inner faces and all of said manifolds having plugged apertures opposite the ends of the water-tubes.

5. A water-tube boiler having at each side superimposed closelyarranged horizontal manifolds, said manifolds being hexagonal exteriorly, a drum at the top-of the boiler, crossed inclined watertubes connecting the manifolds at one side of the boiler to those at the other, said tubes extending perpendicular to the hexagonal sides of the manifolds, and other water-tubes connecting a portion of said manifolds to the drum.

6. A Water-tube boiler having horizontallyarranged manifolds at its sides arranged in groups, water-tubes connecting all the manifolds of each group 011 one side to all the manifolds of the group adjacent the corresponding group on the other side.

7. A water-tube boiler having horizontallyarranged manifolds at its sides, said manifolds being arranged in three groups, watertubes connecting the manifolds of the middle group on each side with the manifolds of both the upper and lower groups 011 the opposite side.

8. A water-tube boiler having horizontallyarranged manifolds at its sides arranged in three groups, a horizontal drum at the top of the boiler, water-tubes connecting the manifolds of the central group on each side of the boiler with the manifolds of the upper and lower groups on the opposite side of the boiler, and other water-tubes connecting the manifolds of the upper group on each side of the boiler with the drum.

9. A water-tube boiler having horizontallyarranged manifolds at its sides, a horizontal drum at its top, crossed inclined water-tubes connecting the manifolds on one side of the boiler with those on the other, and crossheaders at the top of the boiler nippled and riveted to the ends of the drums.

10. A water-tube boiler having horizontally-arranged manifolds at its sides, vertical water-tubes at its ends, and crossed inclined tubes connecting the manifolds on opposite sides, the vertical water-tubes being spaced from each other to admit of a nozzle of a blower or some similar device being inserted between them.

,11. A water-tube boiler having manifolds at its sides and ends, water-tubes within the boiler connecting said manifolds, certain of said manifolds being separated from each other, apertured plates between the separated manifolds and means to close the apertures.

12. A watertube boiler having parallel separated water-tubes at opposite ends thereof, apertured plates between the separated water-tubes and means to close the apertures.

13. A water-tube boiler having horizontally-arranged manifolds at its sides, crossed inclined water-tubes connecting the manifolds on opposite sides, vertical water-tubes at the ends of the boiler, a pair of apertured plates between adjacent water-tubes, one plate being movable relative to the other, whereby the apertures may be opened or closed.

14. A water-tube boiler having horizontally-arranged manifolds at its sides, crossed inclined water-tubes connecting the manifolds on one side with those on the other, vertical manifolds at the ends of the boiler, and horizontal water-tubes connecting the vertical manifolds at one end of the boiler to those at the other end.

15. A water-tube boiler having horizontally-arranged manifolds at its sides, vertically-arranged manifolds at its ends, a steamdrum at its top, crossed inclined water-tubes connecting the horizontal manifolds on one side to those on the other, other water-tubes connecting a portion of the manifolds on each side to the drum, and horizontal watertubes connecting the vertical manifolds at one end to those at the other.

16. A water-tube boiler having horizontal closely-arranged manifolds at its sides, vertical feeders to which. all of said manifolds are connected and from which each can receive a supply of water, and crossed inclined watertubes connecting the manifolds on one side to those on the other.

17. A water-tube boiler having horizontally-arranged manifolds at its sides and a steam-drum at its top, vertically-arranged feeders on each side of the boiler to which all of the manifolds on that side are connected, straight inclined water-tubes connecting the manifolds on one side to those on the other, and other water-tubes connecting a portion of the manifolds on each side to the drum.

18. A water-tube boiler having horizontally-arranged manifolds at its sides, vertical water-tubes at its ends, the vertical tube at each corner of the boiler being nippled to all the adjacent horizontally arranged manifolds, and straight inclined tubes connecting each manifold on one side to a horizontal manifold on the other.

19. A water-tube boiler having horizontally-arranged manifolds at its sides, vertical water-tubes at its ends, the vertical tube at each corner of the boiler being nippled to In testimony Whereof I have signed my all the adjacent horizontally-arranged Inaniname to this specification in the presence of folds, and straight inclined tubes connecting two subscribing Witnesses.

each manifold on one side to a horizontal J. M. MOCLELLON. 5 manifold on the other, each manifold having Witnesses:

plugged apertures opposite the ends of the Lotus 0. SMITH,

Water-tubes. MARGARET A. DUNN. 

